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Round|Natural|GIA

1.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1499381589

Certificate GIA 1499381589

Diamond specifications and retailer prices

From HK$59,952 HKD
$7,641 USD
As of November 1, 2026
Save HK$68,104 HKD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$128,056 HKD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1499381589. Listed at 19 retailers as of November 1, 2026, with prices from HK$59,952 to HK$128,056, a HK$68,104 spread on the same certified stone. NZ Jewellers lists it at HK$128,056. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1499381589
Dimensions7.30 × 7.28 × 4.57 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Feather, Cloud
Top View
7.30 mm7.28 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1499381589
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$84,843 HKD|Low: HK$64,032 HKD|High: HK$107,986 HKD|Avg: HK$81,352 HKD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7HK$64,032 HKD
Retailer 2HK$70,424 HKD
Retailer 8HK$70,434 HKD
Retailer 6HK$70,742 HKD
Retailer 4HK$83,299 HKD
Retailer 1HK$84,843 HKD
Retailer 5HK$94,063 HKD
Retailer 3HK$106,700 HKD

36 data points across 8 retailers

19 retailersHK$59,952 HKD to HK$128,056 HKD

Retailer 1
-
HK$54,852 HKD
$6,991 USD
Price last confirmed 71 days ago
B+
Retailer 2
-
HK$59,952 HKD
$7,641 USD
View
B+
Retailer 3
-
HK$63,710 HKD
$8,120 USD
View
B+
Retailer 4
-
HK$64,032 HKD
$8,161 USD
View
B
Retailer 5
-
HK$64,032 HKD
$8,161 USD
View
Final sale: no returns
B
Retailer 6
-
HK$69,367 HKD
$8,841 USD
View
B+
Retailer 7
-
HK$70,424 HKD
£7,067 GBP
View
B
Retailer 8
-
HK$70,434 HKD
$8,977 USD
View
Retailer 9
-
HK$70,742 HKD
A$13,871 AUD
View
Price last confirmed 10 days ago
B
Retailer 10
-
HK$75,872 HKD
$9,670 USD
View
B
Retailer 11
-
HK$75,872 HKD
$9,670 USD
View
B
Retailer 12
-
HK$78,383 HKD
$9,990 USD
View
B
Retailer 13
-
HK$80,038 HKD
$10,201 USD
View
B
Retailer 14
-
HK$83,299 HKD
€10,111 EUR
View
Retailer 15
-
HK$84,298 HKD
$10,744 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
HK$84,843 HKD
£8,514 GBP
View
B
Retailer 17
-
HK$94,063 HKD
ZAR 193,676 ZAR
View
B
Retailer 18
-
HK$106,700 HKD
£10,708 GBP
View
Most Expensive
B
NZ Jewellers
1689698a-db4d-4d37-997d-21b4358c82c3 · Nov 2
HK$128,056 HKD
$16,321 USD
View
18 more retailers have this diamond
Prices start from HK$59,952 HKDSave up to HK$68,104 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.51ct Round
HK$59,952 HKD